/*
 * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.activiti.engine.impl.cmd;

import java.io.Serializable;
import org.activiti.bpmn.model.AdhocSubProcess;
import org.activiti.bpmn.model.FlowElement;
import org.activiti.bpmn.model.FlowNode;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.ActivitiObjectNotFoundException;
import org.activiti.engine.impl.context.Context;
import org.activiti.engine.impl.interceptor.Command;
import org.activiti.engine.impl.interceptor.CommandContext;
import org.activiti.engine.impl.persistence.entity.ExecutionEntity;
import org.activiti.engine.runtime.Execution;

/**

 */
public class ExecuteActivityForAdhocSubProcessCmd implements Command<Execution>, Serializable {

    private static final long serialVersionUID = 1L;
    protected String executionId;
    protected String activityId;

    public ExecuteActivityForAdhocSubProcessCmd(String executionId, String activityId) {
        this.executionId = executionId;
        this.activityId = activityId;
    }

    public Execution execute(CommandContext commandContext) {
        ExecutionEntity execution = commandContext.getExecutionEntityManager().findById(executionId);
        if (execution == null) {
            throw new ActivitiObjectNotFoundException(
                "No execution found for id '" + executionId + "'",
                ExecutionEntity.class
            );
        }

        if (!(execution.getCurrentFlowElement() instanceof AdhocSubProcess)) {
            throw new ActivitiException(
                "The current flow element of the requested execution is not an ad-hoc sub process"
            );
        }

        FlowNode foundNode = null;
        AdhocSubProcess adhocSubProcess = (AdhocSubProcess) execution.getCurrentFlowElement();

        // if sequential ordering, only one child execution can be active
        if (adhocSubProcess.hasSequentialOrdering()) {
            if (execution.getExecutions().size() > 0) {
                throw new ActivitiException("Sequential ad-hoc sub process already has an active execution");
            }
        }

        for (FlowElement flowElement : adhocSubProcess.getFlowElements()) {
            if (activityId.equals(flowElement.getId()) && flowElement instanceof FlowNode) {
                FlowNode flowNode = (FlowNode) flowElement;
                if (flowNode.getIncomingFlows().size() == 0) {
                    foundNode = flowNode;
                }
            }
        }

        if (foundNode == null) {
            throw new ActivitiException("The requested activity with id " + activityId + " can not be enabled");
        }

        ExecutionEntity activityExecution = Context.getCommandContext()
            .getExecutionEntityManager()
            .createChildExecution(execution);
        activityExecution.setCurrentFlowElement(foundNode);
        Context.getAgenda().planContinueProcessOperation(activityExecution);

        return activityExecution;
    }
}
